I'm trying to make a division with these dimensions:

Height: 12px
Width: 28px

I want the background of the division to be red, but when I make it red,
the division resizes to be bigger. (More height) Why is it doing this? I've
tried using a 1px image of red to fill it, does the same thing as using the
background-color property in CSS1. Any help would be appreciated, or if somebody
could make it happen, i'm humbly awaiting some help.

Thank you